Review : Effect of rearing season, host plants and their interaction on economical traits of tropical tasar silkworm, Antheraea mylitta Drury-an overview

( Narendra Kumar Bhatia ),( Mohammad Yousuf ) 한국잠사학회 2014 International Journal of Industrial Entomology Vol.29 No.1

Tropical tasar silkworm, Antheraea mylitta (Lepidoptera: Saturniidae) is a polyphagous silk producing forest silkworm of commercial importance in India. Forest dependent people rear its larvae on different forestry host plants twice or thrice in a year for small household income. Larvae of A. mylitta feeds on many forest tree species, but always show a great degree of selectivity as a function of its behavioural responses to physical structure and chemical features of the host plants. Cocoon crop of A. mylitta is influenced by heterogeneity of tasar food plants and climatic conditions of the habitat. The role of host plants, temperature, humidity, rainfall, photoperiod and climatic variables on the growth and development of insects have clearly been demonstrated. This article entails an in-depth analysis on ecological and nutritional aspects of A. mylitta, which may provide selective information to researcher and forest managers, who are particularly associated with livelihood improvement of the poor people in forested area through location specific forest insect industry.

Comparative Study on the Ameliorating Effects of Pyrroloquinoline Quinone, S. Cumini and Vitamin C in Liver of STZ-Induced Diabetic Mice: Biochemical and Histopathological Study

( Narendra Kumar ),( Anand Kar ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

Aims: Pyrroloquinoline quinone (PQQ) is known to a strong antioxidant and has high free radical scavenging activities. It protects cells from oxidative stress-induced damage, effectively improves the activities of free radical scavenging enzymes and decreases the level of lipid peroxidation. Vitamin C and S. cumini seed extracts are also known to possess high antioxidative properties and can protect against several types of oxidative damages in diabetes mellitus. With respect to PQQ, nothing was known on its relative efficacy as compared to vitamins and plant extracts that possess antioxidant activity in any diseased condition. However, to its comparative effects in regulating diabetes associated hepatotoxicity, practically nothing has been studied so far. In the present investigation we evaluate and compare the ameliorating effects of PQQ with vitamin C and S.cumini seed extracts in STZ-induced diabetes mellitus with an emphasis on the oxidative stress in liver of mice. Methods: Mice were randomly divided into five groups. Group I receiving only citrate buffer served as the normal control. Animals of groups II-V were rendered diabetic by single dose of streptozotocin (STZ, 150 mg/kg body weight), following which PQQ at a dose of 20 mg/kg, was injected to the animals of group III, while in group IV 50 mg/kg of vitamin C was injected and in group V animals S.cumini seed extract was injected 100 mg/kg for 15 days. At the end, alterations in different serum indices including glucose, lipid profile, α-amylase, urea, SGPT and SGOT; liver tissue peroxidation and antioxidants alterations; histopathological alterations in liver and pancreas were evaluated. Results: STZ-treated animals developed oxidative stress as indicated by a significant increase in lipid peroxidation, serum glucose, total cholesterol, triglyceride and urea, with a parallel decrease in the levels of liver tissue antioxidants. When diabetic animals received dose of PQQ, vitamin C and S. cumini in animals of group III, IV and V respectively, these adverse effects were ameliorated. However, 20 mg/kg of PQQ appeared to be more effective than vitamin C and S.cumini seed extracts. Conclusions: These findings revealed for the first time that PQQ has the better potential than vitamin C and S.cumini seed extracts to mitigate diabetes associated oxidative damages in liver of mice.

Influence of forestry host plants and rearing seasons on silk gland weight of tropical tasar silkworm, Antheraea mylitta (Lepidoptera: Saturniidae) under Doon valley conditions of Uttarakhand in India

( Narendra Kumar Bhatia ),( Mohd. Yousuf ),( Pankaj Tewary ),( Satya Prakash Sharma ) 한국잠사학회 2016 International Journal of Industrial Entomology Vol.32 No.1

Tropical tasar silkworm, Antheraea mylitta is a commercial forest silkworm in India that produces tasar silk, but never experimented in Uttarakhand, a Himalayan state of India. A. mylitta express divergent phenotypic characters under different ecological conditions; so, we studied the effect of seven forest tree species in two rearing seasons on variability in silk gland weight of Daba (bivoltine) ecorace of A. mylitta at Forest Research Institute in Dehra Dun, Uttarakhand during 2012 and 2013. We used two-way completely randomized block factorial design and Post HOC Tukey’s HSD test to analyse the collected data and there after carried out multiple regression analysis. Results indicated that silk gland weight differed significantly between rearing seasons (DF=1, F=2333.98, p <0.05), host plants (DF 6, F= 1516.25, p <0.05) and their interactions (DF=6, F=7.10, p <0.05). Higher silk gland weight was found in second rearing season than the first on all the host tree species. Terminalia alata fed A. mylitta larvae showed the highest silk gland weight of 8.03 and 9.47 g in first and second rearing seasons, followed by T. tomentosa (7.19 & 9.01g), T. arjuna (6.8 & 8.08 g) and L. speciosa (6.57 & 7.83 g) fed larvae, respectively. Post HOC Tukey’s HSD test indicated that silk gland weight of L. speciosa and T. arjuna fed larvae in both the rearing seasons did not differ significantly. E.I. analysis also confirmed that T. alata, T. tomentosa, T. arjuna and L. speciosa are better in their order of merit than T. bellirica , T. chebula and L. tomentosa. Multiple regression analysis indicates that larval weight gain is a strong predictor (β=1.002, t=346.777, p = <0.05) for the silk gland weight of A. mylitta ; however, larval duration had significant negative regression weight (β=-0.270, t=-8.436, p = <0.05) on mean weight of silk gland.

Comparative Study on the Ameliorating Effects of Pyrroloquinoline Quinone, S. Cumini and Vitamin C in Liver of STZ-Induced Diabetic Mice: Biochemical and Histopathological Study

( Narendra Kumar ),( Anand Kar ) 대한간학회 2021 춘·추계 학술대회 (KASL) Vol.2021 No.1

Game Theory Application to Neural Networks in Predicting Stockprice of Companies in Hotel Sector - A Case Study Analysis

( Narendra Kumar Valaboju ),( Ananth Narayan Tripurari ) 한국문화관광학회 2018 문화관광연구 Vol.20 No.2

This paper is a survey on the applications of GAME THEORY TO NEURAL NETWORKS IN PREDICTING STOCKPRICE OF COMPANIES IN HOTEL SECTOR. In this article various domains of GAME THEORY APPLICATION TO NEURAL NETWORKS are discussed. The stock market is a complex, non-stationary, chaotic and non-linear dynamical system. Prediction is the process of estimation in unknown future situations. Predicting stock performance is a very large and profitable area of study. The present study is supported and illustrated by practical application of results. This paper argues that recent advances in game theory concerned with higher order beliefs and heterogeneous prior beliefs.

Characterization of SPN Pickering emulsions for application in enhanced oil recovery

Narendra Kumar,Tushar Gaur,Ajay Mandal 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.54 No.-

Emulsion, stabilized by solid particles that get adsorb on to the surface of the interface is known as Pickering emulsion, which has potential application in enhanced oil recovery (EOR). In present study, a stable oil-in-water surfactant–polymer–nanoparticle (SPN) Pickering emulsion has been formulated using light mineral oil, carboxy methyl cellulose (CMC) and silica nanoparticles (SiO2) in presence of anionic surfactant, for use in EOR. The nanoparticles (NPs) show synergetic effect in presence of surfactant and polymer thus prevents the droplets from coalescence and lowers the interfacial tension (IFT) at the oil–water interface. The emulsion was characterized in terms of particle size, creaming behavior and zeta potential measurements. The viscosity remains stable in wide range temperature (30– 100 C) indicating thermal stability of the Pickering emulsion. The emulsion exhibits pseudo-plastic behavior in wide range of shear rate (1–1000 s1). The investigation of viscoelastic properties (G0 and G00) of the Pickering emulsion as a function of pressure (0–5 MPa) and temperature (30–100 C) shows a stable value of G00 indicating better flow ability of the emulsion. The emulsions show viscous behavior below the specific frequency (SF) indicated by the crossing point between G0 and G00 on the viscoelastic curve and elastic behavior above the SF. Flooding experiment was conducted on sand pack system to study the efficiency of Pickering emulsion in EOR and additional recovery of more than 24% was observed after conventional water flooding.

Forest Insect Industry in Collaborative Forest Management: An Overview

( Narendra Kumar Bhatia ),( Mohammad Yousuf ) 한국잠사학회 2013 International Journal of Industrial Entomology Vol.27 No.1

In India, forest based insect enterprises has never been linked up with any forest management activity, either as a forest conservation strategy or to reduce the poverty in forested area. This investigation indicated that when forest dependent people are associated with forest insect industry (FII) like forest sericulture, lac culture or apiculture; this income generating activity links livelihood with forest conservation, and generates a viable model of collaborative forest management (CFM). In this model different stakeholders work together as a coherent entity for unified goal of managing the forest for well-being of the poor people in fringe areas. Article summaries and evaluates the prospect of India specific forest insect industry, and discusses how and to what extent integration of FII could be a viable livelihood component in CFM to conserve the forest and insect biodiversity. We analysed a case study on forestbased rearing of tropical tasar silkworm rearing in Central India from CFM perspective. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider location specific FII in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours.

Parasitic Behaviour of Xanthopimpla pedator Fabricius (Hymenoptera: Ichneumonidae) on Tropical Tasar Silkworm, Antheraea mylitta Drury (Lepidoptera: Saturniidae) Reared on Seven Forestry Host Plants in Uttarakhand, India

( Narendra Kumar Bhatia ),( Mohammad Yousuf ) 한국잠사학회 2013 International Journal of Industrial Entomology Vol.27 No.2

Antheraea mylitta Drury is a commercial silk producing forest insect in India and Xanthopimpla pedator Fabricius is its larval-pupal endoparasitoid, which causes pupal mortality that affects seed production. Effects of host plants, rearing season and their interactions on parasitic behaviour of X. pedator were studied here, as influence of these factors on biological success of X. pedator is not known. Seven forest tree species were tested as food plants for A. mylitta, and rate of pupal parasitization in both the rearing seasons were recorded and analysed. Results showed that rearing season and host plants significantly affected the rate of pupal parasitization in both the sexes. Pupal mortality was found significantly higher (14.52%) in second rearing season than the first (2.89%). Likewise, host plants and rearing seasons significantly affected length, diameter, and shell thickness of cocoons in both sexes. Out of all infested pupae, 85.59% were found male, which indicated that X. pedator chooses male spinning larva of A. mylitta for oviposition, but we could not answer satisfactorily the why and how aspect of this sex specific parasitic behaviour of X. pedator. Multiple regression analysis indicated that length and shell thickness of male cocoons are potential predictors for pupal parasitization rate of X. pedator. Based on highest cocoon productivity and lowest pupal mortality, Terminalia alata, T. tomentosa, and T. arjuna were found to be the most suitable host plants for forest based commercial rearing of A. mylitta in tropical forest areas of Uttarakhand state, where it has never been reared earlier. Sex and season specific interaction of X. pedator with its larval-pupal host, A. mylitta is a novel entomological study to find out explanations for some of the unresolved research questions on parasitic behaviour of X. predator that opens a new area for specialised study on male specific parasitization in Ichneumonidae.

Effect of rearing season, host plants and their interaction on economical traits of tropical tasar silkworm, Antheraea mylitta Drury- an overview

Bhatia, Narendra Kumar,Yousuf, Mohammad Korean Society of Sericultural Science 2014 International Journal of Industrial Entomology Vol.29 No.1

Tropical tasar silkworm, Antheraea mylitta (Lepidoptera: Saturniidae) is a polyphagous silk producing forest silkworm of commercial importance in India. Forest dependent people rear its larvae on different forestry host plants twice or thrice in a year for small household income. Larvae of A. mylitta feeds on many forest tree species, but always show a great degree of selectivity as a function of its behavioural responses to physical structure and chemical features of the host plants. Cocoon crop of A. mylitta is influenced by heterogeneity of tasar food plants and climatic conditions of the habitat. The role of host plants, temperature, humidity, rainfall, photoperiod and climatic variables on the growth and development of insects have clearly been demonstrated. This article entails an in-depth analysis on ecological and nutritional aspects of A. mylitta, which may provide selective information to researcher and forest managers, who are particularly associated with livelihood improvement of the poor people in forested area through location specific forest insect industry.

Forest Insect Industry in Collaborative Forest Management: An Overview

Bhatia, Narendra Kumar,Yousuf, Mohammad Korean Society of Sericultural Science 2013 International Journal of Industrial Entomology Vol.27 No.1

In India, forest based insect enterprises has never been linked up with any forest management activity, either as a forest conservation strategy or to reduce the poverty in forested area. This investigation indicated that when forest dependent people are associated with forest insect industry (FII) like forest sericulture, lac culture or apiculture; this income generating activity links livelihood with forest conservation, and generates a viable model of collaborative forest management (CFM). In this model different stakeholders work together as a coherent entity for unified goal of managing the forest for well-being of the poor people in fringe areas. Article summaries and evaluates the prospect of India specific forest insect industry, and discusses how and to what extent integration of FII could be a viable livelihood component in CFM to conserve the forest and insect biodiversity. We analysed a case study on forestbased rearing of tropical tasar silkworm rearing in Central India from CFM perspective. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider location specific FII in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours.